6 facts about saguaro cactus.

1. A slow growing saguaro cactus takes 75 years to develop a side arm. 

2. The flowers of saguaro bloom in night. 

3. Saguaro cactus can live about 150 years. 

4. Bats are mainly responsible for the pollination of saguaro.

5. They are mainly found in sonoran desert. 

6. Gila woodpecker makes holes in it.